bbb said almost 3 years ago on Form Wizards from Scratch :
Hi   Awesome episode. I am curious if you have any thoughts on this type of implementation vs. using the wicked gem? 

Also, I'd be curious to learn how you go about saving state in this type of implementation. Aka. user proceeds through the wizard. At some step they log out, and some time in the future they log back in. 

Thanks!